Pig weaning time and weaning precautions
In traditional pig raising in China, piglets are weaned at more than 60 days of age and have a long lactation period. Sows have fewer litters per year. Pigs in developed countries have more than 20 to 28 days of age or weaned earlier to improve sow breeding. rate. At present, China's large-scale pig farms still do not have the equipment and feed conditions required for early weaning. Piglets are generally suitable for weaning at 28 to 35 days of age. At this time, piglets have basically adapted to feed and environmental conditions, and have a high rate of development and development. More neat.
The following two methods are used for piglet weaning: Firstly, piglets are gradually exposed to sows less frequently, mainly to reduce the number of suckling piglets. Before each feeding, piglets are allowed to eat part of the feed to reduce the dependence of the piglets on feeding. This method is generally completed in about 5 days, so it is called "gradual weaning method." The other method is to separate the sow from the piglet once and not to meet the face so that the piglet can immediately stop breastfeeding. All of them rely on feeding. This method is simple, but the care of the piglet should be strengthened within 2 to 3 days after weaning. When the child leaves the sow, she is irritated and has to prevent the occurrence of mastitis in the sow.
Weaning pigs should pay attention to the following issues:
1. The number of feedings was controlled from 4 to 6 days before weaning, and gradually decreased to complete weaning four to five times on the first day, so that both mother and child had an adaptive process.
2. After weaning, we must continue to feed the same pig feed that was used before weaning and supply sufficient clean water, avoiding weighing and castration, and injecting vaccines to cause irritation to the piglets.
3. Increase the amount of vitamin E in the feed to increase the anti-stress ability of the piglet.
Hydroxylamine Hydrochloride Basic Information
CAS: 5470-11-1
MF: NH2OH·HCl
MW: 69.49
Gadolinium Oxide Basic Information
CAS: 12064-62-9
MF: Gd2O3
MW: 362.5
EINECS: 235-060-9
Gadolinium Oxide Chemical Properties
Melting point 2330 °C(lit.)
density 7.407 g/mL at 20 °C(lit.)
storage temp. Storage temperature: no restrictions.
form nanopowder
color White
Specific Gravity 7.407
Water Solubility insoluble
Hexamethylenetetramine Basic Information
CAS: 100-97-0
MF: C6H12N4
MW: 140.19
EINECS: 202-905-8
Hexamethylenetetramine Chemical Properties
Melting point 280 °C (subl.)(lit.)
Boiling point 246.7°C (rough estimate)
density 1.33
storage temp. Store at RT.
solubility H2O: 1 M at 20 °C, clear, colorless
form Solid
Hydroxylamine hydrochloride,Hexamethylenetetramine,Chloropretadalafil,Isopropyl acetoacetate,Gadolinium oxide
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